Results 191 to 200 of about 50,443 (237)

Harnessing diverse hybrid integration for bridging trans-scale multi-dimensional fiber-chip data transmission and processing. [PDF]

Light Sci Appl
Li K, Yan G, Wang K, Cai C, Yang M, Wu G, Zhao W, Peng Y, Shi Y, Dai D, Wang J.   +10 more
europepmc   +1 more source

A Fading Suppression Method for Φ-OTDR Systems Based on Multi-Domain Multiplexing. [PDF]

Sensors (Basel)
Tong S, Tang S, Lu Y, Yuan N, Zhang C, Liu H, Zhang D, Zou N, Zhang X, Zhang Y.   +9 more
europepmc   +1 more source

Multi-channel ultrasonic Bessel vortex beams by spatial multiplexing metalens. [PDF]

Commun Eng
Su Y, Wang D, Gu Z, Liu C, Zhu J.
europepmc   +1 more source

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Orthogonal Frequency Division Multiplexing (OFDM)

2008 China-Japan Joint Microwave Conference, 2008
In broadband wireless system, the signal energy is scattered and reflected from objects in the environment, components of the signal arriving at the receiver are spread out over a longer period of time than is desirable. The challenge is then to provide a high-performance reliable data link that can operate with the restricted receiver power levels ...
openaire   +1 more source

Multi rate orthogonal frequency division multiplexing

IEEE International Conference on Communications, 2005. ICC 2005. 2005, 2005
A novel multi rate orthogonal frequency division multiplexing (OFDM) system is proposed in this paper. It is expected to provide a flexible physical layer support to next generation wireless networks. It is mainly suited to inter carrier interference limited situations, when a large number of sub carriers are used within the available bandwidth ...
S.S. Das, M.I. Rahman, F.H.P. Fitzek
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Optical-orthogonal frequency division multiplexing-review

2017 IEEE International Conference on Power, Control, Signals and Instrumentation Engineering (ICPCSI), 2017
We have witnessed a drastic increase in Orthogonal Frequency Division Multiplexing (OFDM) in optical community in recent years. OFDM is a type of signal modulation. OFDM divides high data rate modulating stream into many slow modulated narrowband subcarriers. Thus, it is less sensitive to frequency fading.
S. Swaminathan, N. R. Raajan
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Orthogonal Frequency Division Multiplexing With Subcarrier Gap Modulation

2020 IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications, 2020
A new modulation scheme called orthogonal frequency division multiplexing with subcarrier gap modulation (OFDM-SGM) is proposed. The proposed scheme embeds extra information bits by exploiting the gap between the active subcarriers in each subblock.
Jaradat, Ahmad Mohammad, Hamamreh, Jehad M., Arslan, Hüseyin   +2 more
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Constant modulus orthogonal frequency division multiplexing

2010 - MILCOM 2010 MILITARY COMMUNICATIONS CONFERENCE, 2010
Orthogonal frequency domain multiplexing (OFDM) is the signal format of choice for spectrally efficient communications over time-invariant, frequency-selective channels. OFDM has a large peak-to-average power ratio, however, which makes it incompatible with transmitter non-linearities {e.g., saturated power amplifiers (PAs)). Conversely, single-carrier
Cenk Kose, Keith M. Chugg, Thomas R. Halford   +2 more
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